Generator hook-up



GENERATOR HOOK-UP Filed DeC. 2l, 1929 Patented Aug. 22,1933

'UNETED STATES GENERATR HOOK-UP Henry J. Mastenbrook, Cleveland, Ohio,assigner to The SwartWoutCompany, Cleveland, Ohio, a.

Corporation of Ohio Application DecemberjZl, 1929 Serial No. 415,715

18 Claims.

This invention relates to pressure generators and more particularly toan improved hook-up for generators of the general class described andclaimed in the United States patent to Copley, No. 1,193,125, issuedAugust 1st, 1916. l -In the operation of steam boilers vand other powerplant equipment such as steam traps vand the like, i it is frequentlydesirable to actuate diaphragm. type valves by fluid pressure whichvaries with variations in the liquid level in a container. Copleydiscloses a pressure generator adapted to span the waterlevel of acontainer and to generate a pressure which varies with the water level.f

It is among the objects of my invention to provide apparatus forconnecting a pressure generator of the general type disclosed by Copleyto a. boiler or the like which will permit the generator to be raised orlowered either-with or without tilting its longitudinal .axis andwithout vdisconnecting the generator conduit from the container; toprovide ag'enerator hook-up whereby the hot water in the generator maybe `blown down without blowing out the cool water in the conduit belowthe generator; to provide a generator hook-up which is easily adjusted,which may be blown ydown without interfering with its efiicientoperation except during the actual blowing down operation,'and which isof ruggedand 'eflicient design.

The above and other objects of my invention will appear from thefollowing description of a preferred form or" my generator hook-up,reference being had to the accompanying drawing in which: ff l Y Fig. lis an end'elevation of the generator hook- -up -appliedto the end of asteam boiler drum; and Fig. 2 is a side elevation of the apparatusillustrated in Fig. l.

The-operation of the generator in mypresent invention is substantiallythe same as the gene'ryartor of the Copley patent referred to above andwill be but briefly described herein. AThe twin generators 1 and 2 aresupported by the section 3 of the conduit which spans the boiler waterlevel L-L. The twin generators 1 and 2 are made up of the inner pipes 4and 5 vwhich are connected at` their upper and lower ends to the conduitsection/'3, tubular shell portions 6, and radiating fins 7. The shellportions 6 surround the pipes 4-and 5 and contain a volatile fluid suchas water. `When the generators are in the position illustrated and theboiler is in operation the pipes 4 and 5 will contain water up to theboiler water level and steam above this level. Y

' As the boiler water level varies, the level in the pipes 4 and5 willvary correspondingly and the volatile fluid within the shells 6 will beheated to a degree depending on the water level in the pipes 1i and 5.Thus the pressure generated bythe volatile fluid will vary with theboiler water level. The shells 6 are connected at their lower ends by atube 3 and a pressureconducting tube 9 may lead from the shells 6 to thediaphragm chamber l0" of alfieed water Valve or the like.

As best seen in Fig. 1, the pipes 4 and 5 are 65 bent into downwardlyextending U-shaped portions 1l below the generators '7. The object ofthis construction is to prevent internal circulation of hot water in thegenerators. In generators not equipped with these drop leg sections thesteam which condensers in the conduit 3 forms .a column, of hot Waterwhich will eventually fill the conduit 3 down to the lower connectionsof the inner Vgenerator pipes and then pass outwardly intol thegenerators. As the difference in temperature between the steam and waterin the generatorsV is a vital factor in their eicient operation thisflow of hot water into the generators is undesirable." ByV providing theU-shaped` pipe portions l1, t`ne'hot condensate which forms in 80conduit 3 cannot displace the cool water in the downwardly extended Ushaped pipes 1l and the operation of the generators will not beAaffected by hot condensate rising into the generators.

The upper end of conduit section 3 is connected 85 to the lower end ofthe upper conduit section l2 by a shorter pipe 13 in which is interposeda union 14. This union 14 may be of any desired and suitable type andits purpose is to allow. relative swinging movement between the conduitsections 3 and 12. When the'union 14 is loosened the conduit sectionsmay be moved relative to each other. When the union 14 is tightened theconduit sections will be held in the desired position and a rigidpressure tight connection will be secured.

.A shut-ofi valve 15 at the upper end of the conduit section 12 providesmeans for shutting off the has a similar function in that it provides anadjustable connection between the conduit section 2 and the boiler drum16.

At Vthe lower end of the conduit section- 3 is a 105 T-connection towhich is attached the blow down rpipe 19 and the-connecting pipe 20.Included in the pipe 20 is a union 2l. The cooler conduit 22 isconnected to the'end of the pipe 20 Vand the union 21 permits Veasyvariation of the anglebe-` 110 tween the generator conduit section 3 andthe cooler section 22. Y

The cooler section 22 may consist of an enlarged tubular portion 23having radiating ns 24 as shown in Fig. 1. The object of this cooler isto cool the hot boiler water before it enters the generators 1 and 2 sothat the diierence in temperature between the steam in the upper-partsof the generators and the water in the lower parts will be great enoughto give the proper pressure generating action.

vAn adjustable connection between the cooler section 22 and the lowerconduitsection 25 is provided by the short pipe 26 and the union'2'? inthe same manner as above described in regard to the connections betweenthe other `conduit sections. The end of section 25 is connected to ashut-'off valve 28 which is attached to the boiler ,drum 1 by a pipe 29and union 30 in the same way as the upper conduit 12. The valve 28permits the conduit to be shut off from the lower part of the boilerwhen desired.

The generator blow down valve 31 is placed in the blow-down pipe 19below the T-connection. 'Ihis valve may be of any suitable type, the oneillustrated being an ordinary hand-operated valve,

and is normally kept closed during the operation of the boiler. When,however, air becomes entrapped in the generators or they become iilledwith scale, etc., it is desirable to blow them out. This is done byclosing the valve 28 and opening the valve 31, permitting steam to blowthrough the generators and thoroughly clean them. As

the cooler 23 is lower than the point where the conduit 22 joins theconduit 3, the cool water in the cooler and the lower part of theconduit system will not be discharged. When the blow-down valve 31 isclosed and the shut-oil valve 28 opened at the completion of the blowdown operation, the cool water from the cooler 24 will rise to boilerlevel in the conduit 3 and the inner pipes 4 and 5 of generators 1 and 2and the generators will immediately be readyfor operation.

In' the above description and the drawing it will be seen thatmygenerator hook-up provides means for connecting generators ofthe classdescribed to boilers and the like so that their vertical position andthe angle of theiraxis may be readily varied to'suit differentconditions. I have also provided a hook-up in which the generators canbe quickly and easily blown down without disturbingA the cool water inthe cooler. Although I ave illustrated and described but one form ofduit swivelly connected to said second section and inclinedV downwardlywith respect thereto having a cooler associated therewith, a section ofconduit swivelly connected at one end to said third section and at* theother end to the boiler, a discharge valve between said second andthirdsections and lshut-off valves at the ends of said conduit adjacentthe boiler.

2. A generator hook-up comprising a sectional conduit connected to spanthe liquid level of a lvertically without liquid container, a generatoron said conduit, swivel means for connecting the sections of saidconduit, said sections being swingable to allow said generator to bemoved vertically without changing its angular relation to the horizontaland a blow-down valve at the lower end of said generator.

3. A generator conduit comprising a plurality of pivotally connectedsections, a generator on one of said sections, a cooler on the sectionadjacent and below said generator section, said two last mentionedsections being connected together at adjacent ends, said last mentionedsection being inclined downwardly with respect to the generator section,a section pivotally connecting the generator section to a liquidcontainer, a section pivotally connecting the cooler section to theliquid container, a blow-down valve between said generator and saidcooler and a shut-olf valve between said last named conduit section andsaid liquid container.

4.v In a pressure generator hook-up the combination of a conduit`comprising at least four pivotally connected sections adapted to beconnected to a liquid container and spanning the liquid level in thesame, a generator comprising an inner pipe and outer shell, means forconnecting the upper end of said inner pipe to one section of saidconduit, means including a drop leg pipe section'forconnecting the lowerend of said inner pipe to said conduit section, and a cooler on aconduit section below the generator carrying conduit section, saidcooler and the section on which it is mounted being inclined downwardlywith respect to the section with which said generator is associated, agenerator blow down valve between said generator and cooler, and a shutoir valve in one of said sections and disposed between said cooler andthe liquid container, the pivotal mounting of said sections permittingverticaladjustment of the position of the generator without changing itshorizontal position.

5. In a pressure generator hook-up the combination of a conduitcomprising at least four pivotally connected sections, a generatorcomprisingan inner pipe and an outer shell, means for connecting theupper end of said inner pipe to one section of said conduit, meansincluding a drop leg pipe section for connecting the lower end of saidinner pipe tosaid conduit section, a cooler on a conduit section belowthe generator carrying conduit section and being inclined downwardlywith respect to said kgenerator carrying conduit section and a generatorblow-down valve between said generator andv said cooler, and aV shut-offvalve in one of said sectionsr and disposed adjacent the end of saidcooler remote from said generator, the pivotal mounting of said sectionspermitting vertical adjustment of the position of the generator withoutchanging is horizontal lposition.

A6. The combination with a boiler, of a sectional conduit comprisingpivotally ,connected sections spanning the water level of the boiler, agenerator mounted on one of said sections, a cooler associated withanother of said sections, the upper end of the section having the coolerassociated therewith being connected to the lower end of the sectionhaving said generator associated therewith and being disposed entirelybelow said last mentioned section, said generator being movable Yvchanging its angular relation to the horizontal. l

7. In a pressure generator hook-up the combination of a iiuid conduitcomprising at least four 1r pivotally connected sections, a' generatorcom-- prisingan inner pipe and outer shell, means for connecting theupper end of said inner pipe to one section ofA said' conduit, meansincluding a drop leg pipe section Vfor connecting the lower end saidsections permitting vertical adjustment of the generator withoutchanging its angular position.

8. A generator hook-up for a boiler comprising a section of conduitswivelly connected to a boiler above the water level, a section ofconduit swivelly connected to said rst section and having a pressuregenerator mounted thereon and having a blow-down valve at the lower endthereof, whereby the generator line may be opened to pass a. scavengingflow of steam through the generator, a section of conduit swivellyconnectedv to said section and inclined downwardly with respect theretoand having a cooler associated therewith, a section of conduit swivellyconnected at one end to said third section and at lthe other end to theboiler, a shut-off valve at the end of said last named section adjacentthe boiler adapted to be closed when said blow-down valve is opened toallow steam to pass through said Y second named section of pipe and saidgenerator without disturbing the Water in the cooler which maythereafter be allowed to rise in the generator;

9. A method of scavengng a pressure generator of the class described andrestoring the same to a condition substantially the same as thatexisting previous to the scavenging` operation which consists in passinga scavenging flow of steam through the generator, isolating a volume ofcooling iluid in a portion of the generator line and permitting the uidto rise in the generator at the termination of the scavenging operation.

l0. In combination witha boiler, a pressure generator, means formounting said generator on said boiler so that said generator may beadjusted vertically without changing the angular relation thereof withrespect to the horizontal, said means comprising a plurality of sectionsswivelly connected and relatively movable one with respect to the other,certain of said sections being swivelly connected to the boiler.

11. In combination with a boiler, a generator mounted to span the waterlevel thereof and being adjustable vertically without changing theangular relation thereof with respect to the horizontal, means formounting said generator on,A

said boiler, said means beingpivotally connected to said boiler andbeing rotatable in a plane normal to the water level, said means forminga part of a fiuid conduit spanning the normal water level of the boiler.i

l2. In combination with a boiler, a generator hook-up comprising asection of conduit swivelly connected to the boiler at a point above thewater level and in iiuidic communication therewith, a second section ofconduit open at one end swivelly connected to the rst section of conduitand in fluidic communication therewith, said second section having apressure gen- 'erator VmountedV thereon spanning the normal water level4of the boiler, and a valve at the lower end thereof for controlling thepassage of iiuid traversing the generatorY through the open end of theconduit section, 'athird conduit swivelly connected to said secondconduit and vin iiuidic communication therewith and inclined .downwardlywith respect thereto and in fluidic communication therewith, said lastnamed pipe section having a cooler associated therewith, a

fourth conduit swivelly connected to the last named conduit and in uidiccommunication therewith and swivelly connected to the boiler below thenormal water level and in fluidic communication therewith, said pipesections being adjustable to varying angular position withoutsubstantially changing the positional relation between the generator andcooler or the angular position of the generator with respect to thenormal water level in the boiler, said last named pipe section havingvalve means for precluding the passage of iiuid in the cooler throughthe outlet when the valve in the second conduit is opened to pass iluidthrough the generator.

13. A method of blowing down a pressure generator of the class describedand restoring the same to a condition substantially the same as thatexisting previous to the blowing down operation which consists inpassing a volume of iluid through the generator, isolating a volume offluid from the boiler and the generator and passing the tiuid thusisolated to the generator after the blowing down operation.

14..In a pressure generator hook-up, the combination of a conduitcomprising at least four pivotally connected sections, a generatorcomprising an inner pipe and an outer shell,'means for connecting theupper end ofthe inner. pipe to one section of the conduit, and meansincluding a drop leg pipe section for connecting the lower end of theinner pipe to the conduit, the pivotal mounting of said sectionspermitting vertical adjustment of the generator without disturbing theangular position thereof to the horizontal.

15. In a generator hook-up the combination of a sectional conduitconnected to span the liquid level of a container, a pressure generator,means vfor connecting the upper end of said generator to said conduit,means including a drop leg pipe section for connecting the lower end ofsaid generator to said conduit, said sectional conduit being comprisedof a plurality of sections pivotally connected together in such a manneras to permit said generator and drop leg pipe section `to be movedvertically upon pivotal adjustment of said sections without changing theangular relation of said generator and drop leg to the horizontal.

16. A generator hook-up for boilers comprising a sectional conduitswivelly connected to a boiler above and below the water level, saidconduit comprising four swivelly connected sections including anintermediate pair of sections, a pressure generator mounted on one ofsaid intermediate sections, a cooler mounted on anotherV section of saidconduit, a discliargevalve in said conduit between said generator andsaid cooler, and shut-off valves at the ends of said conduit adjacentthe boiler.

17. A generator hook-up comprising a sectional conduit connected to spanthe liquid level of a to each other, and a pressure generator mounted onone ot said sections in said inner pair, said sections beingswingable toallow said generator to be moved vertically Without changing its angularrelation to the horizontal, and to allow said generator to be angularlyadjusted with relation to the horizontal Without changing its verticalposition. v

18. A generator hook-up comprising a sectional conduit connected to spanthe liquid level of a container for water and steam, comprising an

